自定义RecyclerView，重写onMeasure()方法
protected void onMeasure(int widthSpec, int heightSpec) {
int measuredHeight = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST);
super.onMeasure(widthSpec, measuredHeight);
}
简单实现ScrollView嵌套RecyclerView或ListView高度问题
